28224550 has 12 divisors (see below), whose sum is σ = 52497756. Its totient is φ = 11289800.

The previous prime is 28224533. The next prime is 28224563. The reversal of 28224550 is 5542282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282196 + ... + 282295.

It is an arithmetic number, because the mean of its divisors is an integer number (4374813).

Almost surely, 2^28224550 is an apocalyptic number.

28224550 is a deficient number, since it is larger than the sum of its proper divisors (24273206).

28224550 is a wasteful number, since it uses less digits than its factorization.

28224550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564503 (or 564498 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 28224550 is about 5312.6782323043. The cubic root of 28224550 is about 304.4684821370.

The spelling of 28224550 in words is "twenty-eight million, two hundred twenty-four thousand, five hundred fifty".